یک برادر داشت آن دباغ زفت ** گربز و دانا بیامد زود تفت
That stout tanner had a brother, (who was) cunning and sagacious: he came at once in hot haste.
اندکی سرگین سگ در آستین ** خلق را بشکافت و آمد با حنین270
(With) a small quantity of dog's dung in his sleeve, he cleft (his way through) the crowd and approached (the senseless man) with cries of grief.
گفت من رنجش همی دانم ز چیست ** چون سبب دانی دوا کردن جلیست
“I know,” said he, “whence his illness arises: when you know the cause (of a disease), the (means of) curing (it) is manifest.
چون سبب معلوم نبود مشکلست ** داروی رنج و در آن صد محملست
When the cause is unknown, the remedy for the illness is difficult (to find), and in that (case) there are a hundred grounds to which it may be referred;
چون بدانستی سبب را سهل شد ** دانش اسباب دفع جهل شد
(But) when you have ascertained the cause, it becomes easy: knowledge of causes is the means of expelling ignorance.”
گفت با خود هستش اندر مغز و رگ ** توی بر تو بوی آن سرگین سگ
He said to himself, “The smell of that dog's dung is multiplied in his brain and veins.
تا میان اندر حدث او تا به شب ** غرق دباغیست او روزی‌طلب275
Up to the waist in filth, he is absorbed in the tanner's craft till nightfall, seeking his livelihood.
پس چنین گفتست جالینوس مه ** آنچ عادت داشت بیمار آنش ده
Thus then has the great Jálínús (Galen) said: ‘Give the patient that to which he was habituated (before his illness);
کز خلاف عادتست آن رنج او ** پس دوای رنجش از معتاد جو
For his illness arises from doing the contrary to (his usual) habit: therefore seek the remedy for his illness in that which is habitual (to him).’
چون جعل گشتست از سرگین‌کشی ** از گلاب آید جعل را بیهشی
He (the tanner), from carrying dung, has become like the dung-beetle: the dung-beetle is made insensible by rose-water.